Method and apparatus for calibrating battery measurement data

Abstract

Disclosed are a method and an apparatus for calibrating battery measurement data. The apparatus for calibrating battery measurement data measures alternating current resistances of the same battery sample by using a plurality of different measuring devices, sets, as a reference alternating current resistance, an alternating current resistance measured by a measuring device set as a reference measuring device from among the plurality of measuring devices, determines a first deviation between the reference alternating current resistance and each alternating current resistance measured by the other measuring devices, and calibrates the alternating current resistances measured by the other measuring devices using the first deviation.

1 . A method of calibrating battery measurement data, the method comprising:
 measuring alternating current resistances of a same battery sample by using a plurality of different measuring devices;   setting, as a reference alternating current resistance, an alternating current resistance measured by a measuring device set as a reference measuring device from among the plurality of measuring devices, and determining a first deviation between the reference alternating current resistance and each alternating current resistance measured by the other measuring devices; and   storing the first deviation to calibrate alternating current resistances of battery cells measured by the other measuring devices.   
     
     
         2 . The method of  claim 1 , further comprising:
 determining a second deviation between the reference alternating current resistance measured by the reference measuring device in a first cycle and the reference alternating current resistance measured by the reference measuring device in a current cycle; and   calibrating the alternating current resistances of different battery cells measured by the plurality of measuring devices using the first deviation and the second deviation for each measuring device.   
     
     
         3 . The method of  claim 1 , further comprising providing a user interface for selecting a measurement mode or a calibration mode,
 wherein the first deviation is determined and stored when the calibration mode is selected, and   the alternating current resistances of the battery cells measured by the other measuring devices are calibrated using the previously determined first deviation when the measurement mode is selected.   
     
     
         4 . An apparatus for calibrating battery measurement data, the apparatus comprising:
 a sample measurement unit configured to measure alternating current resistances of a same battery sample by using a plurality of different measuring devices;   a deviation determination unit configured to set, as a reference alternating current resistance, an alternating current resistance measured by a measuring device set as a reference measuring device from among the plurality of measuring devices, and determine a first deviation between the reference alternating current resistance and each alternating current resistance measured by the other measuring devices; and   a calibration unit configured to calibrate the alternating current resistances of battery cells measured by the other measuring devices using the first deviation.   
     
     
         5 . The apparatus of  claim 4 , wherein the deviation determination unit is configured to determine a second deviation between the reference alternating current resistance measured by the reference measuring device in a first cycle and the reference alternating current resistance measured by the reference measuring device in a current cycle, and
 the calibration unit is configured to calibrate the alternating current resistances of different battery cells measured by the plurality of measuring devices using the first deviation and the second deviation.   
     
     
         6 . The method of  claim 4 , further comprising an input unit configured to provide a user interface for selecting a measurement mode or a calibration mode,
 wherein the first deviation is determined and stored when the calibration mode is selected, and   the alternating current resistances of the battery cells measured by the other measuring devices are calibrated using the previously determined first deviation when the measurement mode is selected.   
     
     
         7 . A computer-readable recording medium recording a computer program for performing the method described in  claim 1 .